diff --git a/application/symfony/src/Attribut/ClassAttribut.php b/application/symfony/src/Attribut/ClassAttribut.php
new file mode 100644
index 0000000..c33b9a4
--- /dev/null
+++ b/application/symfony/src/Attribut/ClassAttribut.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace App\Attribut;
+
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+/**
+ * @see ClassAttributInterface
+ *
+ * @author kevinfrantz
+ */
+trait ClassAttribut
+{
+    /**
+     * @var string
+     */
+    private $class;
+
+    /**
+     * @param string $class
+     */
+    public function setClass(string $class): void
+    {
+        if (class_exists($class)) {
+            $this->class = $class;
+
+            return;
+        }
+        throw new NotFoundHttpException('Class '.$class.' couldn\'t be found!');
+    }
+
+    /**
+     * @return string
+     */
+    public function getClass(): string
+    {
+        return $this->class;
+    }
+}
diff --git a/application/symfony/src/Attribut/ClassAttributInterface.php b/application/symfony/src/Attribut/ClassAttributInterface.php
new file mode 100644
index 0000000..51d7082
--- /dev/null
+++ b/application/symfony/src/Attribut/ClassAttributInterface.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Attribut;
+
+/**
+ * @author kevinfrantz
+ */
+interface ClassAttributInterface
+{
+    /**
+     * @param string $class
+     */
+    public function setClass(string $class): void;
+
+    /**
+     * @return string
+     */
+    public function getClass(): string;
+}
diff --git a/application/symfony/tests/Unit/Attribut/ClassAttributTest.php b/application/symfony/tests/Unit/Attribut/ClassAttributTest.php
new file mode 100644
index 0000000..055e487
--- /dev/null
+++ b/application/symfony/tests/Unit/Attribut/ClassAttributTest.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Attribut;
+
+use PHPUnit\Framework\TestCase;
+use App\Attribut\ClassAttributInterface;
+use App\Attribut\ClassAttribut;
+use App\Entity\Source\AbstractSource;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+class ClassAttributTest extends TestCase
+{
+    /**
+     * @var ClassAttributInterface
+     */
+    protected $classAttribut;
+
+    public function setUp(): void
+    {
+        $this->classAttribut = new class() implements ClassAttributInterface {
+            use ClassAttribut;
+        };
+    }
+
+    public function testConstructor(): void
+    {
+        $this->expectException(\TypeError::class);
+        $this->classAttribut->getClass();
+    }
+
+    public function testAccessors(): void
+    {
+        $class = AbstractSource::class;
+        $this->assertNull($this->classAttribut->setClass($class));
+        $this->assertEquals($class, $this->classAttribut->getClass());
+    }
+
+    public function testException(): void
+    {
+        $class = 'NOTEXISTINGCLASS';
+        $this->expectException(NotFoundHttpException::class);
+        $this->classAttribut->setClass($class);
+    }
+}